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    <meta charset="UTF-8">
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    <title>Document</title>
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<body>
    <script>
        let a=100;
        b=a;
        b=200
        console.log(a+":"+b)

        let w=true
        b=w;
        b=false
        console.log(w+":"+b)

        let obj1={name:"tom"}
        obj2=obj1
        obj.name="jack"
        console.log(obj1)
        console.log(obj2)

        let arr1=[1,2,3]
        arr2=arr1
        arr2[0]=10


        console.log(arr1);
        console.log(arr2);

        let obj3={money:100000000000,caar:"就打不"};
        let obj4={}
        obj4=obj3
        obj3.money=1000;
        console.log(obj3)
        console.log(obj4)


        
    </script>
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